Question
A started a business with an investment of Rs.30000.
After few months B joined him with an investment of Rs.42000. If at the end of the year, they share the profit in the ratio of (A:B) 15:7, then find after how much time B joined the business?Solution
Let B invested for ‘m’ months. According to the question, => (30000 x 12)/(42000 x m) = 15/7 => m = 4 months So, the required time = 12 – 4 = 8 months
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